Grand Theft Auto V was really this week's No.1

Grand Theft Auto V was this week's No.1 game in the UK if digital numbers were included, MCV understands.

This week's GfK Chart-Track report reveals that Mortal Kombat X was the best-selling UK boxed game. But the data does not factor in sales on digital platforms such as Steam.

PC games are primarily sold digitally - analysts estimate as little as 10 per cent of PC sales take place on the High Street - so whenever a big PC game is released, it is inevitably underestimated in the boxed charts.

And there was no bigger PC release last week than Grand Theft Auto V.

In fact, sources close to the data tells MCV that GTA V would have sold almost six times more than what the Chart-Track reports says.

Mortal Kombat X was released digitally, as well. We have no insight into how that game performed via download platforms, although according to Steam's global Top Ten, Mortal Kombat X was the third best-selling PC game of the week, while GTA V was No.1.

It is widely accepted that triple-A games on console (such as Mortal Kombat) are overwhelming bought via boxed retailers. However, what the split is between download and physical is not known, because we still do not have accurate sharing of data.

MCV is trying to pull together a chart that includes digital sales data. We already have several publishers signed up and we will be regular putting out alternative charts and stories, including this one.

This isn't to play down the success Warner Bros has had with Mortal Kombat X. The brawler is the second-biggest launch of the year (behind Battlefield: Hardline) and is the most successful launch yet for a Mortal Kombat release.